重点讲解：
1. out of （表示比例）每…中；
例句：Nine out of ten people will not agree with you.
十个人里面有九个不会同意你的意见。
2. make sense 可以理解；讲得通；
例句：Doing that does not make sense.
做那件事没有意义。
3. be able to 可以…的，能够…的；
例句：He was able to put complicated thought into simple words.
他能用简单的话表达复杂的思想。